US Bridges

ST128 over HWY Concord ST

Fair

Essex County, Massachusetts · .7 MI N ST133 · Structure no. G050212U7DOTNBI

Built
1948
77 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
90,905
2019 count
Owner
State
State Highway Agency

About this bridge

ST128 over HWY Concord ST is a steel stringer/multi-beam or girder carrying ST128 over HWY Concord ST in Essex County, Massachusetts. It was built in 1948, so it is 77 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 90,905 vehicles a day, roughly 2% of them trucks, projected to reach 90,020 by 2032. The structure is 61 ft (18.6 m) long and 92 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesST128
CrossesHWY Concord ST
Location.7 MI N ST133
RouteState Highway 128
CountyEssex County
StateMassachusetts
Coordinates42.62427, -70.70979
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width92 ft (28 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90,905 (2019)
Projected traffic90,020 by 2032
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST128 over HWY Concord ST built?

It was built in 1948, making it 77 years old in 2025.

What condition is ST128 over HWY Concord ST in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does ST128 over HWY Concord ST carry?

About 90,905 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is ST128 over HWY Concord ST?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 92 ft wide.

Who owns ST128 over HWY Concord ST?

It is owned by the State Highway Agency.